Global Patent Index - EP 0920094 A1

EP 0920094 A1 19990602 - Variable wavelength laser light source

Title (en)

Variable wavelength laser light source

Title (de)

Laserlichtquelle mit variablen Wellenlänge

Title (fr)

Source laser à longeurs d'ondes variables

Publication

EP 0920094 A1 19990602 (EN)

Application

EP 98309645 A 19981125

Priority

JP 32934497 A 19971128

Abstract (en)

A variable wavelength laser light source is disclosed which can improve the resolution of the outgoing light and output only pure laser light without the natural emitted light. A variable wavelength laser light source of the invention comprises an optical amplification element 11, first optical reflecting means 12 which is set at the end surface 11a of the optical amplification element 11, wavelength selection element 13 which is set at the end surface 11b of the optical amplification element 11 and selects and outputs the desired wavelength light emitted by the optical amplification element 11, second optical reflecting means 14 reflecting the outgoing light from the wavelength selection element 13 and constitutes the resonator along with the first optical reflecting means 12, first rotating mechanism 15 which rotates the second optical reflecting means 14 around its axis, and second rotating mechanism 16 which rotates the second optical reflecting means 14 around the second axis 16a set outer of the second optical reflecting means 14. <IMAGE>

IPC 1-7

H01S 3/085; H01S 3/1055; H01S 3/081

IPC 8 full level

H01S 3/105 (2006.01); H01S 3/081 (2006.01); H01S 3/1055 (2006.01); H01S 5/06 (2006.01); H01S 5/14 (2006.01)

CPC (source: EP US)

H01S 3/0812 (2013.01 - EP US); H01S 3/1055 (2013.01 - EP US); H01S 5/141 (2013.01 - EP US)

Citation (search report)

  • [XA] EP 0702438 A1 19960320 - PHOTONETICS [FR]
  • [A] DE 29607659 U1 19960829 - GABBERT MANFRED DIPL PHYS [DE]
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 018, no. 035 (E - 1494) 19 January 1994 (1994-01-19)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 047 (E - 1313) 28 January 1993 (1993-01-28)
  • [A] FAVRE F ET AL: "EXTERNAL-CAVITY SEMICONDUCTOR LASER WITH 15 NM CONTINUOUS TUNING RANGE", ELECTRONICS LETTERS, vol. 22, no. 15, 17 July 1986 (1986-07-17), pages 795/796, XP002032605

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0920094 A1 19990602; CA 2254468 A1 19990528; CA 2254468 C 20020115; JP H11163450 A 19990618; US 6047008 A 20000404

DOCDB simple family (application)

EP 98309645 A 19981125; CA 2254468 A 19981125; JP 32934497 A 19971128; US 20050698 A 19981125